Calculation of capillary blood flow in a hypomagnetic field

A hypothesis is proposed according to which the cause of primary magnetoreception, i.e. the organ reacting to the hypomagnetic field, is blood plasma - a colloidal solution with a thermodynamically equilibrium concentration of bulk nanobubbles. The gas content of the liquid is proportional to the magnetic field induction. When calculating the capillary blood flow velocity in the range of magnetic field induction B from 1 μT (hypomagnetic) to 50 μT (earth), it is shown that with a decrease in B in the blood plasma, the volume fraction of air nanobubbles decreases, reducing the total volume fraction of the dispersed phase (erythrocytes + nanobubbles) of the blood. The effective viscosity of the blood decreases, according to the Einstein equation. According to the Poiseuille equation, the capillary blood flow velocity increases. Additional acceleration is also created by an increase in the pressure drop in the capillary due to a decrease in the volume of nanobubbles in the blood. As a result, an estimate of the increase in capillary blood flow velocity in a hypomagnetic field of 17.5% was obtained, close to the experiment.